Extruder cap



FIG. 1 is a bottom, front perspective view of a design for an extruder cap;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a front, right side perspective view of the extruder cap shown in an environment.

The broken lines depict portions of the extruder cap that form no part of the claimed design. 

CLAIM The ornamental design for an extruder cap, as shown and described. 